What is AppleConnect - Check Repair Web?

I have just sent in my iPhone for repair, and when I want to use the repair tracking service, I either have to input some information (Repair ID & Serial Number/Postal Code) or sign in with my Apple ID. When selecting the option to sign in with my Apple ID, this AppleConnect, Check Repair Web page comes up. When I input my Apple ID, the page seems to accept it, but then it refreshes and I'm back on the same "AppleConnect - Check Repair Web". When I selected forgot password, or AppleConnect Name, it redirects me to forgot Apple ID. I have attached a picture of this page, but you can look it up yourself: https://idmsa.apple.com/IDMSWebAuth...N&iso-lang=prod&path=/us/en/signIn?redir=list. Does anyone know what this is, or how I can see my repairs using my Apple ID?

UPDATE:

I have just tried using someone else's Apple ID, and it lets them access their repairs.

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